Patent No. EP2758168 (titled "Diesel Oxidation Catalyst With Layered Structure Containing Ceria Composition As Palladium Support Material For Enhanced Hc And Co Gas Conversion") was filed by Basf on Sep 21, 2012. The application was issued on Nov 16, 2022.

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
| Company | Opposition Date | Representative |
|---|---|---|
| JOHNSON MATTHEY PUBLIC LIMTED | Apr 30, 2020 | NUNN |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
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